(Answered by Thomas Luton)
Paul McCartney was arguably the most musically gifted out of all 4 Beatles. As the groups bassist, he used this ability to create wonderfully intricate and melodic bass lines.
Perhaps his most intricate bass lines are found on the last Beatles album ‘Abbey Road’. You have to remember that by this point in 1969, the Beatles were at the absolute pinnacle of their musical ability after producing several incredible albums.
Abbey Road is a masterwork of production and musicality and Paul’s bass lines reflect his abilities as a bassist. I think this is reflected in the song ‘Something’, maybe George Harrison’s magnum opus.
An incredibly written love song , ‘Something’ is a beautiful ode to love and commitment. Although the song was written by Harrison, I would recommend listening to Paul McCartney’s incredibly melodic and interesting bass line.
Busy and richly melodic, this bass line emerges as one of the most prominent features of the track. Although accused of some, including Harrison himself, of being too busy, I think it clearly reflects Paul’s incredible creativity and ability as a bassist.
Every Moment Has A Song 